Use the elimination method to solve the system of equations. Choose the correct ordered pair. 4x + 7y = 60 -4x + 7y = -4 (1, 0) (8, 4) (2, 4) (4, 7)

1 answer

To solve the system of equations using the elimination method, we have the following system:

  1. \( 4x + 7y = 60 \)
  2. \( -4x + 7y = -4 \)

We can begin by adding both equations together to eliminate \( x \).

\[ (4x + 7y) + (-4x + 7y) = 60 + (-4) \]

This simplifies to:

\[ 0x + 14y = 56 \]

Thus, we have:

\[ 14y = 56 \]

Now, divide both sides by 14:

\[ y = 4 \]

Now that we have \( y \), we can substitute it back into one of the original equations to find \( x \). We'll use the first equation:

\[ 4x + 7(4) = 60 \]

This simplifies to:

\[ 4x + 28 = 60 \]

Subtract 28 from both sides:

\[ 4x = 32 \]

Now, divide both sides by 4:

\[ x = 8 \]

Therefore, the solution to the system of equations is \( (x, y) = (8, 4) \).

The correct ordered pair from the given options is:

(8, 4).